JP3863713B2 - Cooler temperature sensing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temperature sensing device for a cooler in which a temperature sensing sensor is attached to a refrigerant pipe arranged in a serpentine shape with a holder.
[0002]
[Prior art]
The prior art will be described with reference to FIGS. Reference numeral 1 denotes a refrigerator main body having a heat insulating structure in which a foam heat insulating material 4 is filled between an outer box (outer wall plate) 3 and an inner box (inner wall plate) 2. In the refrigerator main body 1, a refrigerator compartment 5, a vegetable compartment 6, and a freezer compartment 7 are partitioned from above, and a refrigerator compartment 5 and a partition plate (partition wall) 8 are provided at the bottom of the refrigerator compartment 5. A specific low temperature chamber 9 is provided, and the freezer compartment 7 is divided into an upper freezer compartment 10 and a lower freezer compartment 11. The front opening of the refrigerator compartment 5 is closed at one side of the refrigerator body 1 by a pivotable door 12 that is pivoted laterally by a hinge device and opened and closed. The front opening of the vegetable compartment 6 is closed by a drawer-type door 14 that is drawn forward together with the vegetable container 13 supported so as to be drawn in the front-rear direction by left and right rails or roller devices provided in the vegetable compartment 6. Like the vegetable compartment 6, the upper freezer compartment 10 and the lower freezer compartment 11 are each a drawer-type door that is drawn forward together with containers 15 and 16 supported so as to be able to be drawn in the front-rear direction with respect to the left and right rails provided in the freezer compartment. Closed at 17 and 18.
[0003]
25 is a refrigerant compressor of the refrigeration system, 26 is a condenser of the refrigerant of the refrigeration system, and 27 is an evaporating dish for evaporating defrost water of a cooler described later by the heat of the condenser 26. Reference numerals 28 and 29 are refrigerant coolers (evaporators) of the refrigeration system, 28 is a cooler for the freezer compartment 7, and 29 is a cooler for the refrigerator compartment 5. 30 is a cold air circulation blower for the freezer compartment 7, and 31 is a cold air circulation blower for the refrigerator compartment 5. The cold air cooled by the cooler 28 for the freezer compartment 7 is circulated back to the cooler 28 via the ice making chamber 20, the upper freezer compartment 10 and the lower freezer compartment 11 by the blower 30. The cold air cooled by the cooler 29 for the refrigerator compartment 5 is circulated back to the cooler 28 via the refrigerator compartment 5, the specific low temperature compartment 9 and the vegetable compartment 6 by the blower 31. The specific low temperature chamber 9 is provided with a container 50 supported so that it can be pulled out in the front-rear direction with respect to the left and right rails provided in the specific low temperature chamber 9.
[0004]
Reference numeral 32 denotes a dew receiving device that is disposed below the cooler 28 and receives defrost water from the cooler 28. Reference numeral 33 denotes a glass tube type electric heater disposed between the cooler 28 and the dew receiving device 32, and constitutes a defrosting device that defrosts the cooler 28 by the generated heat. Reference numeral 34 denotes a dew receiving device that is disposed below the cooler 29 and receives defrost water from the cooler 29. Reference numeral 35 denotes a glass tube type electric heater disposed between the cooler 29 and the dew receiving device 34, and constitutes a defrosting device that defrosts the cooler 29 by the generated heat.
[0005]
The coolers 28 and 29 have a configuration in which heat dissipation fins are attached to the refrigerant pipes 36 arranged in a meandering manner, and are cooled by evaporation of the refrigerant flowing through the refrigerant pipes 36, so that moisture in the surrounding air adheres thereto. As a result, frost on the refrigerant pipe 36 and the fins for heat radiation adheres. The frost is melted by the heat generated by the glass tube electric heaters 33 and 35, respectively. Reference numeral 37 denotes a temperature detection sensor for detecting the temperature of the cooler 28 or 29 and is a defrosting end temperature detection sensor of the cooler 28 or 29. The defrosting end temperature detection sensor 37 is attached to a flat portion of a synthetic resin sensor holder 38 by a band 39. The sensor holder 38 has a pair of left and right elastic arc-shaped attachment portions 40, and the attachment portions 40 are held by being elastically fitted to the left and right refrigerant pipes 36 and 36.
[0006]
The temperature of the coolers 28 and 29 is increased by the defrosting operation due to the heat generation of the glass tube electric heaters 33 and 35, and the defrosting end temperature detection sensor 37 detects the predetermined increased temperature, whereby the glass tube electric heater is detected. This is a mechanism to stop energization to 33 and 35 and end the defrosting operation.
[0007]
[Problems to be solved by the invention]
In this prior art, the defrosting end temperature detection sensor 37 is attached to the flat portion of the sensor holder 38 made of synthetic resin by the band 39, so that the sensor installation work is troublesome. Further, since the sensor holder 38 is configured to be attached to the left and right refrigerant pipes 36, 36, when the sensor holder 38 is attached to a cooler having a different interval between the left and right refrigerant pipes 36, 36, the dimensions of the attachment portions 40, 40 are matched. Therefore, it is necessary to prepare a new sensor holder 38. The present invention is an invention in view of these points, and does not require a sensor mounting band. Further, it is also considered to provide a sensor holder that can be used even when the intervals between the refrigerant pipes are slightly different.
[0008]
[Means for Solving the Problems]
As a specific means for solving the above-mentioned problems, the present invention provides a cooler in which a temperature detection sensor is attached to a refrigerant pipe arranged in a serpentine shape with a holder, and the holder is opened by an external force from an open initial state. A sensor holding part consisting of a pair of left and right holding pieces whose one end is opened and closed by an elastic movable connecting part so as to be narrowed, and is connected to the other end of one of the holding pieces and uses elasticity. A first mounting portion having a restoring force that fits into the refrigerant pipe, and a first mounting portion that is connected to the other end portion of the other holding piece and has a restoring force that fits into the refrigerant pipe using elasticity. 2 and an anti-rotation part extending from the front opening of each of the attachment parts, the first attachment part and the second attachment part are in an alternating state in the opened initial state , The temperature sensor is connected to the sensor. In the held state wraps the holding portion, the first mounting portion and the second mounting portion are aligned substantially linearly, the first mounting portion and the second mounting portion is fit fits into the refrigerant pipe The technical means which became the state which became the said state narrowed in the state, and the said non-rotating part pinched | interposed the refrigerant | coolant pipe part adjacent to the refrigerant | coolant pipe part to which each said attaching part was attached was employ | adopted.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a temperature sensing device for a cooler according to the present invention will be described. 1 to 5 show one embodiment of a temperature sensing device for a cooler according to the present invention, FIG. 1 is a perspective view of a temperature sensing sensor holder according to the present invention, and FIG. 2 is a temperature sensing sensor according to the present invention. FIG. 3 is a front view of the temperature detection sensor holder of the present invention, and FIG. 4 is an explanatory view of a state in which the temperature detection sensor holder of the present invention is attached to the cooler. FIG. 5 is a perspective view for explaining a state in which the temperature detection sensor holder of the present invention is attached to the refrigerant pipe of the cooler.
[0010]
Embodiments of the present invention will be described below in the case where the temperature sensing device for a cooler of the present invention is applied to the refrigerator of FIG. In FIG. 1 to FIG. 5, reference numeral 50 denotes a cooler applied to the refrigerator of FIG. 6, in which a straight portion 51 and the straight portions 51 and 51 communicate with each other through a U-shaped bent portion 52 in a plan view. The refrigerant pipe 53 is bent in a serpentine shape, and a large number of plate-like fins 54 are attached to the refrigerant pipe 53 so as to intersect the straight portion 51 at a substantially right angle. The refrigerant pipe 53 has a configuration in which the planes bent in a meandering manner as shown in FIG. 4 are arranged in parallel (positioned on the other side of the plane of FIG. 4). It flows in a pipe 53 in series. This cooler 50 is incorporated in the refrigerator 1 and performs the intended function in the same manner as the cooler 28 or 29 shown in FIG. FIG. 4 shows a state viewed from the front side of the refrigerator in a state where it is incorporated in the refrigerator 1 of FIG.
[0011]
Reference numeral 55 denotes a temperature detection sensor for detecting the temperature of the cooler 50. As one type of the temperature detection sensor, a defrosting end temperature detection sensor of the cooler 50 is shown. The temperature detection sensor 55 may be a semiconductor element whose resistance value changes depending on the temperature, a bimetal element whose contact is opened or closed depending on the temperature, or another element.
[0012]
Reference numeral 56 denotes a sensor holder for holding the temperature sensor 55, which is made of a synthetic resin such as polypropylene. The sensor holder 56 is composed of a pair of left and right holding pieces 58A and 58B whose one ends are connected to each other by an elastic movable connecting portion 57 so that the sensor holding device 56 is narrowed by an external force from the opened initial state. The first mounting portion 60A connected to the other end of the holding piece 58A opposite to the movable connecting portion 57, and the other end of the other holding piece 58B corresponding to the opposite side of the movable connecting portion 57. It has the 2nd attaching part 60B connected 62, and the rotation prevention parts 63A and 63B extended in the direction away from the opening parts 64A and 64B of each attaching part 60A and 60B, respectively. In this configuration, in the state before the sensor holder 56 is attached to the cooler 50, the attachment portions 60A and 60B are left and right in FIG. 3 as shown in FIGS. 1 and 3 due to the elasticity of the movable connecting portion 57. The pair of left and right holding pieces 58A and 58B are also in a state where the sensor holding portion 59 is opened.
[0013]
In this state, with the temperature detection sensor 55 positioned on the sensor holding portion 59, the pair of left and right holding pieces 58A, 58B are held against the elasticity of the movable connecting portion 57 with the attachment portions 60A, 60B sandwiched between one finger. Thus, the temperature sensing sensor 55 is wrapped and held in the sensor holding portion 59. The opening and closing openings of the holding pieces 58 </ b> A and 58 </ b> B are formed with a stepped portion 65 and a convex portion 66 that fit together, and in a state where the temperature detection sensor 55 is wrapped and held in the sensor holding portion 59. The parts 66 fit into each other. As a result, it is possible to prevent the cold air from directly hitting the temperature detection sensor 55 and to accurately detect the temperature. Further, the step portion 65 and the convex portion 66 may be bonded with an instantaneous adhesive or the like.
[0014]
In this manner, the attachment portions 60A and 60B are arranged in a substantially straight line in a state where the temperature detection sensor 55 is wrapped and held in the sensor holding portion 59. Further, the rotation preventing portions 63A and 63B form a mutual interval substantially corresponding to the diameter of the refrigerant pipe 53 in parallel with the mounting portions 60A and 60B arranged in a substantially linear shape. In this state, referring to FIGS. 4 and 5, the opening portions 64A, 64B of the attachment portions 60A, 60B are made to correspond to the straight portions 51 of the refrigerant pipe of the cooler 50 from above the cooler 50, and the attachment portions 60A, 60B, The attachment portions 60A and 60B are fitted to the refrigerant pipe 53 while expanding the frontage portions 64A and 64B using the elasticity of 60B. With this operation, the rotation preventing portions 63A and 63B sandwich the refrigerant pipe portion 51B adjacent to the refrigerant pipe 51A to which the attachment portions 60A and 60B are attached. As a result, the sensor holder 56 is attached and held to the refrigerant pipe 53 by the attachment parts 60A and 60B in a state where the temperature sensing sensor 55 is wrapped and held in the sensor holding part 59, and the sensor holders 56 of the sensor holder 56 are held by the rotation prevention parts 63A and 63B. The temperature sensing sensor 55 is held in a predetermined state with limited rotation. When replacing the temperature sensor 55, the sensor holder 56 can be removed from the refrigerant pipe 53 in the reverse order of the above attachment order.
[0015]
As described above, the present invention provides a cooler in which a temperature sensor is attached to a refrigerant pipe arranged in a serpentine shape with a holder, so that the holder is narrowed by an external force from an open initial state. A sensor holding part composed of a pair of left and right holding pieces whose one end is connected to be opened and closed by an elastic movable connecting part, and is connected to the other end of one of the holding pieces and is fitted into the refrigerant pipe using elasticity. A first attachment portion having a restoring force that fits together, a second attachment portion that is connected to the other end portion of the other holding piece and has a restoring force that fits into the refrigerant pipe using elasticity, and The first attachment portion and the second attachment portion are in an alternating state in the opened initial state and are fitted to the refrigerant pipe. The state becomes the narrowed state, Serial detent portion wherein a technical constitution that a state of sandwiching each other refrigerant pipe portion adjacent to the refrigerant pipe portions each mounting unit is attached.
[0016]
For this reason, it is in an open state before being attached to the cooler, and in this state, it is easy to position and hold the temperature detection sensor on the sensor holding portion. In this temperature detection sensor holding state, the attachment portion is fitted to the refrigerant pipe. By combining, the attachment to the refrigerant pipe and the rotation prevention operation can be performed at a time. In addition, by forming the anti-rotation portion long in advance, it can be applied as a sensor holder with limited rotation even when the interval between the refrigerant pipes is somewhat wide.
[0017]
The present invention is not limited to the above-described embodiments, and various modifications can be considered without departing from the technical scope of the present invention, and the various embodiments related thereto are included.
[0018]
【The invention's effect】
According to the present invention, it is easy to hold the temperature detection sensor before being attached to the cooler, and the holding operation of the temperature detection sensor by the band as in the conventional case becomes unnecessary. Further, in this temperature sensor holding state, the attachment to the refrigerant pipe and the rotation prevention operation can be performed at a time, and there is an effect that this can be performed by one-hand operation. Further, the present invention can be applied in common when the intervals between the refrigerant pipes are slightly different.
[Brief description of the drawings]
FIG. 1 is a perspective view of a temperature detection sensor holder according to the present invention.
FIG. 2 is a side view of a state in which a temperature detection sensor is held by a temperature detection sensor holder according to the present invention.
FIG. 3 is a front view of a temperature detection sensor holder according to the present invention.
FIG. 4 is an explanatory diagram of a state in which the temperature detection sensor holder of the present invention is attached to a cooler.
FIG. 5 is a perspective view for explaining a state in which a temperature detection sensor holder of the present invention is attached to a refrigerant pipe of a cooler.
FIG. 6 is a longitudinal sectional side view of a prior art refrigerator to which the present invention is applied.
FIG. 7 is an explanatory view showing a state in which a temperature sensing sensor holder according to the prior art is attached to a cooler.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Refrigerator body 5 ... Cold room 6 ... Vegetable room 7 ... Freezer room 50 ... Cooler 51 ... Linear part of refrigerant pipe 53 ... Refrigerant pipe 55 ... Temperature detection sensor 56 ... Sensor holder 57 ... Elastic movement Connecting portion 58A ... Holding piece 58B ... Holding piece 59 ... Sensor holding portion 60A ... First mounting portion 60B ... Second mounting portion 63A ... Anti-rotation portion 63B ... Anti-rotation portion 64A ... Frontage portion 64B ... Frontage portion

Claims (1)

In a cooler in which a temperature sensor is attached to a refrigerant pipe arranged in a serpentine shape with a holder,
Before SL retainer one end so that the initial state to the state in which narrowed by an external force and a sensor holding portion made of openable linked pair of left and right holding pieces by elastic movable connector part open, one of the A first attachment portion connected to the other end portion of the holding piece and having a restoring force that fits into the refrigerant pipe using elasticity, and connected to the other end portion of the other holding piece and uses elasticity. A second mounting portion having a restoring force that fits into the refrigerant pipe, and a detent portion extending from a front end portion of each mounting portion,
The first mounting portion and the second mounting portion prior SL is a staggered state in the open initial state,
In a state where the temperature sensing sensor is wrapped and held in the sensor holding portion, the first attachment portion and the second attachment portion are arranged in a substantially straight line,
The first attachment portion and the second attachment portion are in the narrowed state when fitted to the refrigerant pipe, and the rotation preventing portion is a refrigerant next to the refrigerant pipe portion to which the attachment portions are attached. A temperature sensing device for a cooler, characterized in that the pipe parts are sandwiched between each other.

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